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Power - TV Horizontal Output (sweep) ·Pentode

40KG6A

Magnoval power pentode for color-television horizontal-deflection output, combining approximately 34 W plate dissipation with very high instantaneous plate current.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
38A
Socket code
B9D
Base pins
9
Nominal heater
40 V / 300 mA

Description

Magnoval power pentode used as a horizontal-deflection amplifier in color television receivers.

Socket description

Magnoval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
38A
Socket code
B9D
Base pins
9
Nominal heater voltage
40 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

38A - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Max plate voltage
700 V
Max screen voltage
250 V
Max plate dissipation
34 W
Max screen dissipation
7 W
Max cathode current
500 mA

Horizontal-deflection power-pentode ratings; peak pulse values preserved as parameters.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • For plate current of 60 /zA -—

    -3 V

    Published in approved 6KG6A target datasheet entry; Section1

  • For fixed-bias operation 0.5

    0.25 MΩ

    Published in approved 6KG6A target datasheet entry; Section1

  • For cathode-bias operation 1

    0.5 MΩ

    Published in approved 6KG6A target datasheet entry; Section1

  • Heater Voltage (ac/dc) 6.3

    40 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Heater Current 2

    300 mA

    Published in approved 6KG6A target datasheet entry; Section1

  • Plate to Grid-No.l

    2.5 pF

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.l to Heater

    0.2 pF

    Published in approved 6KG6A target datasheet entry; Section1

  • Plate Supply Voltage

    700 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Peak Positive-Pulse Plate Voltage*

    7000 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.2 Voltage (zero-current)

    700 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.2 Voltage

    250 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Plate Dissipation (Absolute-Maximum Value)

    34 W

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.2 Input

    7 W

    Published in approved 6KG6A target datasheet entry; Section1

  • Cathode Current

    500 mA

    Published in approved 6KG6A target datasheet entry; Section1

  • For fixed-bias operation

    0.25 MΩ

    Published in approved 6KG6A target datasheet entry; Section1

  • For cathode-bias operation

    2.2 MΩ

    Published in approved 6KG6A target datasheet entry; Section1

  • (

    10 microseconds

    Published in approved 6KG6A target datasheet entry; Section1

  • Heater Voltage (ac/dc) 6.3

    22 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Heater Current 1.6

    450 mA

    Published in approved 6KG6A target datasheet entry; Section1

  • Heater Warm-up Time

    11 seconds

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid No.l to Plate

    1.2 pF

    Published in approved 6KG6A target datasheet entry; Section1

Characteristic

  • Plate Voltage 45

    160 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.3 Voltage! 0

    0 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.2 Voltage . 160

    160 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.l Voltage . 0

    0 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Plate Current* .... 1000 (min.)

    1400 mA

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.2 Current"

    45 mA

    Published in approved 6KG6A target datasheet entry; Section1

  • Plate Voltage 140 60

    140 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Positive-Pulse

    6500 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.3 (Suppressed-Grid) Voltage . 0 30 30

    30 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.2 (Screen-Grid) Voltage . . . 140 140 140

    140 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.l (Control-Grid) Voltage —24.5 0

    -24.5 V

    Published in approved 6KG6A target datasheet entry; Section1

  • Plate Resistance (Approx.)

    6000 Ω

    Published in approved 6KG6A target datasheet entry; Section1

  • Transconductance

    9500 µS

    Published in approved 6KG6A target datasheet entry; Section1

  • Plate Current 560tt

    80 mA

    Published in approved 6KG6A target datasheet entry; Section1

  • Grid-No.2 Current 31tt

    2.4 mA

    Published in approved 6KG6A target datasheet entry; Section1

  • of

    1 mA

    Published in approved 6KG6A target datasheet entry; Section1

  • of 1 mA —110

    -42 V

    Published in approved 6KG6A target datasheet entry; Section1